Pesja's 2-number drop table

Here is a memory trick for memorizing a drop table out to 600 yards (From "New Exact Small Arms Ballistics" by Arthur J Pejsa). Arthur Pejsa suggests a simple way of remembering a drop table. Let's try it out. Perhaps it is more trouble than it is worth.

1. Zero for 200 yards
2. Write down the number of clicks to adjust for 300 yards, call it "X", say 10 clicks
3. Write down the number of clicks to adjust for 400 yards, call it "Y", say 22 clicks
4. You remember 2 numbers, "X" and "Y"-("X"*2). Or "10" and 22-(10*2).
5. You remember 10 and 2.

So, 200 yards is 0.....................0
300 yards is 10.......................10
400 yards is 300 yards + 10+10+2......22
500 yards is 400 yards + 22+10+2+2....36
600 yards is 500 yards + 36+10+2+2+2..48

Let's try some examples: Winchester Supreme 223 Rem Ballistic Silvertip BC=0.238

Actual clicks  Estimated clicks, "8" "3"
200 0
300 8..............8
400 19.............8+8+3=19
500 33.............19+8+3+3=33
600 52.............33+8+3+3+3=50

Winchester USA 308 Win Full Metal Jacket BC=0.415

200 0
300 10.........10
400 23.........10+10+3=23
500 37.........23+10+3+3=36
600 53.........36+10+3+3+3=55

Remington Managed-Recoil 7mm Rem Mag Core-Lokt PSP BC=0.388

200 0
300 11...........11
400 25...........11+11+3=25
500 41...........25+11+3+3=42
600 60...........42+11+3+3+3=62

It's a fine line between stupid and clever. - David St. Hubbins So, this almost works, it is clever, but printing a drop table on a luggage tag is probably less trouble. I like the idea of drop as a caliber, the 7mmm Mag above is an 11-25 (like a lever action caliber). So 0-200 is zero (at 100 yards you are 2.1" high), 300 is 11, 400 is 25. That would do for deer hunting purposes, for example. I could probably remember that. Wind would still be a problem.